CC Case water pump leaking

Water pump has slow leak. Turning in grease cap helps a little. Any ideas on how to stop the leak?

The ball bearing in the CC Case water pump need to be a slip fit between the pump housing and the outer race of the bearing. Corrosion can cause this to not be a slip fit. Also the spring that pushes forward on the outer race of the ball bearing must be in good condition.

The spring pushes forward on the ball bearing which pulls forward on the water pump spindle. This maintains load on the seal face and prevents leakage if the seal face is in good condition. The seal acts as a thrust bearing that normally resist the spring and the fan. When the engine is running, the fan also pulls forward on the spindle. This also adds load to the seal face which helps it to seal if the ball bearing OD is not stuck to the pump's housing.

The DC water pump changed this design and went to a cartridge seal with the spring built into a cartridge. This made repairing a simpler process.

My C Case had the spring completely rusted away. The rebuilder did not put a new spring in the pump. It leaked after being rebuilt only when stopped. When running, the fan pulled forward and the pump did not leak. It was a puzzle. I learned what I wrote above when I proceeded the redo the rebuild.

The pump housing may be stuck/rusted to the block like mine was. If you decide to take your pump off and it is stuck to the block, I can share some tricks on how to get it separated from the block.

Ron

Could you continue this thread with how you got the water pump off the block?

Hi Bob in Australia. How are things down under?? Us blokes here in America are anxious for spring to arrive!! LOL.

My C series Case was my dads and I am quite sure the water pump had never been off before in 50+ years. The pump leaked so it would not hold antifreeze. My rebuilder had done several D series pumps for me. I sent him the C pump after I got it unstuck from the block.

The pump gasket was thick enough to start a small wedge. The ears for the 3 bolts looked/are fragile but there is quite a bit of space between the ears and room all around the pump when the water elbow above the pump is removed.

I started with one small screwdriver as a wedge away from the ears---knowing the gasket was replaceable---a D series gasket fits. I also knew that any scarring of the metal surface by the wedge was not a serious matter and could be filled with some Permatex and some filing off any burrs created by the wedge.

It would not budge trying one wedge several times in three different places. I acquired 8 more (cheap) small screwdrivers. With 3 wedges forcing more and more between each set of ears, the pump came loose without breaking the pump housing. The radial space available to drive in a wedge is limited. If the screwdrivers bottom out, just grind off the end some. Consider the cheap screwdrivers as expendable tooling.

The missing spring was originally a coil spring and the axial gap for the spring was too much for wave washers. I ended up using several PAIR of THIN Belleville washers in SERIES for the spring and the load applied to the ball bearing was a guess on my part. Probably no more than 5 pounds.

You probably know that Belleville washers can be installed either in "series" or in "parallel" and wave washers can only be used single or in "parallel". A "dozen" wave washers would have filled the axial space but would have been very stiff. For the Belleville washer in series, the load is only as much as one washer can apply before it bottoms out.

I smeared the Belleville washers with grease to slow down corrosion. The hole in the bottom of the housing should keep liquid away from the ball bearing and the spring and keep corrosion slow.

Thanks Ron

Generally things are good in Australia, but farming is getting tougher all the time. Our main problems are climate change in an already arid climate and really low commodity prices. We just try to be as efficient as we can to keep up.

My C Case has great sentimental value as my Dad bought in new in 1937. Had a lot of use until he went to war in 1940, then little use until he got back in 1945, used it for a few years then war injuries caught up with him in 1950. It was sold out of his estate to a cousin. My Uncle kept track of it and I was able to buy it in 1978.

Push by hand the fan shaft in a 1/2 inch , And then turn the grease up a bunch and then release it. Get the grease where it supposed to go.
Don L.

Dad bought our 1938 C Case in 1949. It was good enough tractor that it became one of two sentimental favorites. I recently was compelled to find a good home for it. Another Case tractor good enough to become my other sentimental favorite is my 1170. Still use it. None of my many other tractors were good enough to produce any significant sentimental attachment.

I sense that climate change here in the USA Midwest is giving us more rain. Fresh water is good stuff.